Electrically actuated pneumatically operated valve assembly

摘要

A butterfly water valve (10) for a heater core has a vacuum motor (18) attached to the water valve body (12) with the vacuum motor connected to the butterfly valve crank (28). The vacuum motor housing (18) has a well formed therein and a solenoid operated valve (72) is quick connected in the well and is ported directly to the vacuum motor pressure chamber (44). The solenoid valve well communicates with a vacuum connector (24) formed integrally with the vacuum motor housing. The vacuum motor housing is preferably formed of two shells (40,52) welded together and sealing about the rim (62) of a pressure responsive diaphragm (64). <IMAGE>